First working version!
This commit is contained in:
parent
1416372b32
commit
d327e529a9
|
|
@ -21,30 +21,168 @@
|
|||
* *
|
||||
****************************************************************************/
|
||||
|
||||
This folders contains most common FACE configuration files
|
||||
The name of the file specify the members that are added to the vertex class
|
||||
The name is a sequence of letters, in strict alphabetical order.
|
||||
The possible admitted letters pairs are
|
||||
/****************************************************************************
|
||||
History
|
||||
|
||||
FA - face-face adjacency
|
||||
FC - Per-Face Color
|
||||
FN - Per-Face Normal
|
||||
FQ - Per-Face Quality
|
||||
VA - Vertex-face adjacency
|
||||
WC - Per-Wedge Color
|
||||
WN - Per-Wedge Normal
|
||||
WQ - Per-Wedge Quality
|
||||
WT - Per-Wedge Texture Coords
|
||||
SA - Shared Vertex-Face and Face-Face Adjacency
|
||||
RT - Data for Optimized Point-Face Distance and Ray-Tracing Stuff
|
||||
$Log: not supported by cvs2svn $
|
||||
****************************************************************************/
|
||||
|
||||
E.g.
|
||||
#ifndef __VCGLIB_IMPORT_STL
|
||||
#define __VCGLIB_IMPORT_STL
|
||||
|
||||
#include<vcg/simplex/vertex/with/fafnwc.h>
|
||||
#include <stdio.h>
|
||||
|
||||
generate a type
|
||||
VertexFAFNWC<VertexType>
|
||||
namespace vcg {
|
||||
namespace tri {
|
||||
namespace io {
|
||||
|
||||
that can store F-F adjacency, Per face normal color and per wedge color.
|
||||
/**
|
||||
This class encapsulate a filter for importing stl (stereolitograpy) meshes.
|
||||
The stl format is quite simple and rather un-flexible. It just stores, in ascii or binary the, unindexed, geometry of the faces.
|
||||
warning this code assume little endian (PC) architecture!!!
|
||||
*/
|
||||
template <class OpenMeshType>
|
||||
class ImporterSTL
|
||||
{
|
||||
public:
|
||||
|
||||
typedef typename OpenMeshType::VertexPointer VertexPointer;
|
||||
typedef typename OpenMeshType::ScalarType ScalarType;
|
||||
typedef typename OpenMeshType::VertexType VertexType;
|
||||
typedef typename OpenMeshType::FaceType FaceType;
|
||||
typedef typename OpenMeshType::VertexIterator VertexIterator;
|
||||
typedef typename OpenMeshType::FaceIterator FaceIterator;
|
||||
|
||||
// if it is binary there are 80 char of comment, the number fn of faces and then exactly fn*4*3 bytes.
|
||||
|
||||
enum {STL_LABEL_SIZE=80};
|
||||
|
||||
class STLFacet
|
||||
{
|
||||
public:
|
||||
Point3f n;
|
||||
Point3f v[3];
|
||||
// short attr;
|
||||
};
|
||||
|
||||
static int Open( OpenMeshType &m, const char * filename, CallBackPos *cb=0)
|
||||
{
|
||||
FILE *fp;
|
||||
bool binary=false;
|
||||
fp = fopen(filename, "r");
|
||||
if(fp == NULL)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Find size of file */
|
||||
fseek(fp, 0, SEEK_END);
|
||||
int file_size = ftell(fp);
|
||||
int facenum;
|
||||
/* Check for binary or ASCII file */
|
||||
fseek(fp, STL_LABEL_SIZE, SEEK_SET);
|
||||
fread(&facenum, sizeof(int), 1, fp);
|
||||
int expected_file_size=STL_LABEL_SIZE + 4 + (sizeof(short)+sizeof(STLFacet) )*facenum ;
|
||||
if(file_size == expected_file_size) binary = true;
|
||||
unsigned char tmpbuf[128];
|
||||
fread(tmpbuf,sizeof(tmpbuf),1,fp);
|
||||
for(int i = 0; i < sizeof(tmpbuf); i++)
|
||||
{
|
||||
if(tmpbuf[i] > 127)
|
||||
{
|
||||
binary=true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
// Now we know if the stl file is ascii or binary.
|
||||
fclose(fp);
|
||||
if(binary) return OpenBinary(m,filename,cb);
|
||||
else return OpenAscii(m,filename,cb);
|
||||
}
|
||||
|
||||
static int OpenBinary( OpenMeshType &m, const char * filename, CallBackPos *cb=0)
|
||||
{
|
||||
FILE *fp;
|
||||
fp = fopen(filename, "rb");
|
||||
if(fp == NULL)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
int facenum;
|
||||
fseek(fp, STL_LABEL_SIZE, SEEK_SET);
|
||||
fread(&facenum, sizeof(int), 1, fp);
|
||||
|
||||
m.Clear();
|
||||
FaceIterator fi=Allocator<OpenMeshType>::AddFaces(m,facenum);
|
||||
VertexIterator vi=Allocator<OpenMeshType>::AddVertices(m,facenum*3);
|
||||
// For each triangle read the normal, the three coords and a short set to zero
|
||||
for(int i=0;i<facenum;++i)
|
||||
{
|
||||
short attr;
|
||||
Point3f norm;
|
||||
Point3f tri[3];
|
||||
fread(&norm,sizeof(Point3f),1,fp);
|
||||
fread(&tri,sizeof(Point3f),3,fp);
|
||||
fread(&attr,sizeof(short),1,fp);
|
||||
for(int k=0;k<3;++k)
|
||||
{
|
||||
(*vi).P().Import(tri[k]);
|
||||
(*fi).V(k)=&*vi;
|
||||
++vi;
|
||||
}
|
||||
++fi;
|
||||
}
|
||||
fclose(fp);
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static int OpenAscii( OpenMeshType &m, const char * filename, CallBackPos *cb=0)
|
||||
{
|
||||
FILE *fp;
|
||||
bool binary;
|
||||
fp = fopen(filename, "r");
|
||||
if(fp == NULL)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
m.Clear();
|
||||
|
||||
/* Skip the first line of the file */
|
||||
while(getc(fp) != '\n');
|
||||
|
||||
STLFacet f;
|
||||
/* Read a single facet from an ASCII .STL file */
|
||||
while(!feof(fp))
|
||||
{
|
||||
fscanf(fp, "%*s %*s %f %f %f\n", &f.n.X(), &f.n.Y(), &f.n.Z());
|
||||
fscanf(fp, "%*s %*s");
|
||||
fscanf(fp, "%*s %f %f %f\n", &f.v[0].X(), &f.v[0].Y(), &f.v[0].Z());
|
||||
fscanf(fp, "%*s %f %f %f\n", &f.v[1].X(), &f.v[1].Y(), &f.v[1].Z());
|
||||
fscanf(fp, "%*s %f %f %f\n", &f.v[2].X(), &f.v[2].Y(), &f.v[2].Z());
|
||||
fscanf(fp, "%*s"); // end loop
|
||||
fscanf(fp, "%*s"); // end facet
|
||||
if(feof(fp)) break;
|
||||
FaceIterator fi=Allocator<OpenMeshType>::AddFaces(m,1);
|
||||
VertexIterator vi=Allocator<OpenMeshType>::AddVertices(m,3);
|
||||
for(int k=0;k<3;++k)
|
||||
{
|
||||
(*vi).P().Import(f.v[k]);
|
||||
(*fi).V(k)=&*vi;
|
||||
++vi;
|
||||
}
|
||||
}
|
||||
fclose(fp);
|
||||
return 1;
|
||||
}
|
||||
}; // end class
|
||||
} // end Namespace tri
|
||||
} // end Namespace io
|
||||
} // end Namespace vcg
|
||||
|
||||
|
||||
//@}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue